This was despicable and I read that it was done right in front of his fiancé and her (or their) kids. I hope they hang these murderers. And what cowards going after the dad.
This is a dispicable act and immoral in all facets. It is seen in every neighborhood, to different extents. Some locales (jurisdictions) handle the situations better than others. In general reference, the voting (or the non-voting) history of these locales. I have to question as to where and what extent, neighbors and bystanders could(should) have intervened. We stand together, or fall together.